hg: panama/panama/jdk: Make FieldGenerator a class to reduce code duplication

[mikael.vidstedt at oracle.com]

Changeset: f58a7c892738
Author:    mikael
Date:      2016-07-21 11:28 -0700
URL:       http://hg.openjdk.java.net/panama/panama/jdk/rev/f58a7c892738

Make FieldGenerator a class to reduce code duplication

! src/java.base/share/classes/jdk/internal/nicl/CivilizedHeaderImplGenerator.java
! src/java.base/share/classes/jdk/internal/nicl/ClassGenerator.java
! src/java.base/share/classes/jdk/internal/nicl/FieldGenerator.java
! src/java.base/share/classes/jdk/internal/nicl/FieldsBuilder.java
! src/java.base/share/classes/jdk/internal/nicl/HeaderImplGenerator.java
! src/java.base/share/classes/jdk/internal/nicl/MethodImplGenerator.java
! src/java.base/share/classes/jdk/internal/nicl/NativeLibraryImpl.java
! src/java.base/share/classes/jdk/internal/nicl/StructImplGenerator.java
! src/java.base/share/classes/jdk/internal/nicl/VarargsMethodImplGenerator.java